DeepSeek
Open-source LLM optimized for advanced reasoning and code
OpenAI o1
AI that can do general-purpose complex reasoning
Updated February 2026
| DeepSeek | OpenAI o1 | |
|---|---|---|
| Rating | 4.9★ | 5.0★ |
| Reviews | 41 | 11 |
| Pros | 17 | 1 |
| FactScore™ | 78.7 | 54 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in DeepSeek — Pros
Deep thinking ability Supports coding tasks Handles complex tasks Fast performance Open source Free tier Excellent for research Advanced search capabilities Easy to use High-quality output Context aware Excellent for content creation File analysis Low cost API Supports long conversations Time-saving Web search featureBoth tools — Pros
—Only in OpenAI o1 — Pros
Ai featuresOnly in DeepSeek — Cons
Slow performance Not as good as ChatGPT Server busy errors Times out Interaction feels like a tool Lack of image understanding Overly verbose responsesBoth tools — Cons
—Only in OpenAI o1 — Cons
Difficulty canceling subscription Limited conditional logic complexityDetails
| DeepSeek | OpenAI o1 | |
|---|---|---|
| Categories | LLMs, AI Chatbots, Foundation Models | LLMs |
| Platforms | Web · iOS | Web |
| Became Popular | December 28, 2024 | September 13, 2024 |
| Website | chat.deepseek.com | openai.com |
Who Should Pick Which?
Choose DeepSeek if...
- Deep thinking ability
- Supports coding tasks
- Handles complex tasks
Choose OpenAI o1 if...
- Ai features
With a FactScore™ of 78.7 vs 54, DeepSeek leads in community reception. DeepSeek uniquely offers Deep thinking ability and Supports coding tasks, while OpenAI o1 stands out for Ai features.
What Users Say
DeepSeek
DeepSeek’s open-source breakthroughs made a huge difference for us. Thanks to their work, we were able to train Macaron’s RL-powered Deep Memory and code-writing agent at a scale and efficiency tha...
We've adopted it as remio's AI model. Its proficiency in handling complex tasks, from coding to language translation, is truly remarkable. It has significantly boosted our productivity and enhanced...
DeepSeek Chat serves as our reliable foundation for basic content creation tasks. Its efficient performance and consistent output quality make it perfect for handling straightforward development re...
OpenAI o1
We power our AI chart generation through o1 to get high quality visualizations for any data question. o1 is able to deeply understand any data source, including complex custom databases.
ChatGPT Pro includes o1 pro mode, a version of o1 that uses more compute to think harder and provide even better answers to the hardest problems.
OpenAI's o1 model, with its advanced reasoning and planning capabilities, significantly enhances our decision-making process.
Related Comparisons
Frequently Asked Questions
Which is better, DeepSeek or OpenAI o1?
Based on FactScore™, DeepSeek leads with a score of 78.7 vs 54. DeepSeek has a higher rating of 4.9★ compared to 5.0★.
What are the pros of DeepSeek compared to OpenAI o1?
DeepSeek uniquely offers: Deep thinking ability, Supports coding tasks, Handles complex tasks, Fast performance, Open source.
What are the pros of OpenAI o1 compared to DeepSeek?
OpenAI o1 uniquely offers: Ai features.
Is DeepSeek better rated than OpenAI o1?
DeepSeek is rated 4.9★ from 41 reviews. OpenAI o1 is rated 5.0★ from 11 reviews.
What is the FactScore™ of DeepSeek and OpenAI o1?
FactScore™ weighs rating and review volume together. DeepSeek scores 78.7 and OpenAI o1 scores 54.
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